Yes, those fans seem suitable. Their Air Flow max (CFM) and pressure max (mm of water) specs are reasonable for use on an AIO radiator. As you say, they are PWM type fan motors with ADDR RGB (3-pin, 5 VDC) type lighting units. Their specs say the motor consumes 0.11 A current max (very reasonable) and the lights use 0.45A max (also reasonable) PER FAN. For reference, when you connect more than one fan motor to a mobo SYS_FAN or CHA_FAN header, the header is limited to no more than 1.0 A max current to its total load, so three fans at 0.11 A each is no problem. Similarly, your mobo manual says the JRAINBOW header for ADDR RGB lights ca supply up to 3.0 A max, and the fans each consume at max 0.45 A for the lights, so still no problem.
MSI Mystic Light is the utility supplied by MSI for use with its mobos for RGB light power and control via the mobo headers. It is general enough to work with both their plain RGB (4-pin 12 VDC) and ADDR RGB (3-pin, 5 VDC) RGB lighting systems. As it happens, the mobo you cited has two of the Plain RGB headers and one of the ADDR RGB type. You will be using only the single ADDR RGB type header, labelled JRAINBOW on your mobo - see your manual p. 40, and look at bottom front corner of the board.
Like all other RGB Fans, these ones come with TWO cables from each. One is for the motor only and ends in a 4-pin (well, 4 holes on a female connector) standard fan connector with two ridges down one side to mate with a tongue sticking up beside the mobo SYS_FAN headers. The other is a wider connector with space for 4 holes, but one hole blocked off. This is the ADDR RGB lighting cable that goes to the mobo JRAINBOW header. In each case you may need an accessory cable.
First, for the radiator fans, you have not told us what AIO system you plan to buy. This is important because there are several ways that they power and control their rad fans. The simple way is that the PUMP unit is plugged into the PUMP_FAN1 header (in your mobo) to power and control only the pump. Then the rad fans are plugged into another mobo header (in your case, the CPU_FAN1 header and the normal automatic fan speed control system in that header is used to control the rad fans according to the CPU's internal temperature sensor. IF that is what your system will do, then you will need a simple fan SPLITTER cable able to supply at least three outputs, perhaps like this example
https://www.newegg.com/p/N82E168124..._re=coboc_fan_splitter-_-12-423-163-_-Product
NOTE that this device has one input arm that plugs into the mobo header (CPU_FAN) and three output arms with male connectors for your fans. Of those arms, one one has all 4 pins so it can return its fan's speed signal to the header; the other two outputs are missing Pin #3 by design, and this is proper. This Splitter does NOT have any other connection "arms". (A HUB, which is a different device, has an third type of "arm" that must plug into a SATA or Molex power output connector from the PSU. You do NOT need that.)
Another type of Splitter that looks like a small printed circuit board (and should be fastened down to avoid it moving and shorting out somewhere) is this
https://www.newegg.com/p/N82E168824..._re=coboc_fan_splitter-_-82-422-016-_-Product
With this one, the only output that does send its fan's speed back is the one labelled "CPU", so ensure that ONE of your rad fans is plugged in there.
SOME AIO system do things differenty and control the rad fans through the Pump unit using a software tool and a USB2 cable connection to the pump for commumication. In this case you would need a way to connect your three Deepcool fans to the output socket on the AIO system pump unit. Depending on what that socket is like, you MAY be able to use a common fan Splitter as above.
Now for the LIGHTS. You have three fans with lighting cables, and one JRAINBOW header. So you need an RGB Splitter like this
https://www.newegg.com/p/1W7-005X-0...cm_re=RGB_splitter-_-9SIACJF8XP0023-_-Product
That is a two-pack of 3-pin 5VDC ADDR RGB splitter cables, each with three outputs. Because their output connectors are female, they include gender-changer adapters to convert their outputs to male so you can plug in your fans' ADDR RGB cables.
None of this talks about fans for CASE VENTILATION becasue you have not asked any questions about them. IF you have questions about those, post back here.
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