I think its a good idea to have both a laptop and desktop computer, laptop for on the road stuff and desktop cause of stability. I have both a laptop and desktop, but in the end i love the deskptop, i had so many CPU issues with a laptop, mac laptop batteries die after 4/5 years and you have to get it replaced, i remember the pain without ableton for a week. ouch and forgetting to bring the charger, Lol
as long as you can get your ideas down on a DAW and play with your synths then its alright
but go for specs man, 16gb ram, i7 intel, dude, you are set, its better for workflow = means get things load faster and you get things done quicker
so yeah build up your studio bit by bit