Okay, I'm looking at components for a DIY desktop/portable convertable.
I'm going to type up some thoughts and link to some potential hardware options.
My thought here is to make suggestions and give some advice around what you could expect in terms of performance and weight, while making few assumptions and leaving the final implementation up to the user, your, discretion.
I have lots of examples, including the one I use. I'll try to get it to you today.