Hey all I’ve ordered a pc from pc specialist on finance and all has been approved and are just waiting for me to sign papers electronically to give the go ahead for the build the problem is a lot of people have said my 350w PSU is too weak for my I5 9500f and gtx1660ti build especially if I want to overclock is there a way to change the part out before it’s built and alter finance or is it all set in stone and I hve to start again ?