yea u can upgrade to windows 10 without any problem
ur everything is fine...
but make sure that u don't run any other application while gaming coz it will eat CPU...means CPU usage will increase...
Intel Celeron G1610 is 2.6ghz processor... now a days latest games need more than 2.6ghz processor's.. so if possible upgrade ur processor in future to play latest games
overall u r good to install Win 10...