That's the best choice of mobo you have now

Asa ka kita ana bro? Mao unta na ako paliton sauna.
For the ram. You can get 4GB of ram now, BUT......
It's not a guarantee that you will be able to purchase the same type of ram next time when you upgrade. Dual memory must be of the same brand/model to function properly.
Sa akong experience akong gi buhat kay palit kog 4gb ram una pud. Nya after 1 month na, padung nako mu add ug usa ka 4gb, wala nako kita ug ram parehas ato akong gi palit. I ended up getting a 4gb stick that was not able to run in Dual Channel with my first 4gb stick.
Akong recommend sa ram, get 2 sticks of 4gb.