Big box stores are NOT going to cut with the precision and fiddly shaped pieces you need to make this worthwhile though. Even using a circular saw is going to result in something that looks, well, home made. Using hand tools for symetrical cuts would be a nightmare. You really need a table saw and if you want to do t-molding, a router. I've built a couple and and as I quickly found out on my first one, this is more a wood-working project than anything else. I used ikea cupboard doors as base material and the finish is excellent, but very hard to work with (chipping) and you need to plan your cuts to avoid exposed edges.
http://dochstader.com/arcade/