if you're going to go ortho, go split. getting the space between the two halves is well worth it. if you're going the plank route (no number row), look at the lets split or keeb.io Levinson. keeb.io has a plethora of great pcb kits that won't make your wallet cry.
also, you don't have to go with dsa (or similar uniform profile) style caps either, most (especially smaller otho's) can use a standard 104 keyset without issue (blank or otherwise). i don't use any dsa (uniform profile) caps.
actually, here's a pic of my viterbi with a set of red rosewill/tai-hao caps on it. just as an example, and this is 2x (5x7) grids (with mods on left half) and only 2 caps in the wrong row/profile.
it currently has blank dark grey (alpha) & blank red (num & mods) caps on it
my favorite cheap blank caps are the thick PBT ones form NPKC or YMDK which can be found many places. you could even get a white set & dye them whatever colors you wanted.