I'd respectfully suggest the ELB in TBB is a tad 'Americanised'.
I'm going to sound a bit of a longbow snob here, but if you are 6' tall I'd have thought you could manage a 28" draw.
Any how I'd certainly suggest tillering it out to 28", as if you make it a traditional ELB length but only draw 26" it will look seriously underdrawn and won't be working very hard. I'm just finishing a boo backed ELB for a fairly short guy who wants 26" draw and it's only 67.5" tip to tip which would look like a ladies boew on a 6' guy!
As a good working compromise maybe aim for 71" nock to nock.
I'd suggest you rough out at 33mm wide x 30 thick at the grip running parallel for about 6" - 8" either side of centre and then taper to 22mm thick x 20mm thick quare at the tip. This gives extra tip width that can be useful as ELBs can have a tendency to try and bend sideways on you. The extra width gives room for some sideways adjustment to counter this. This should give plenty of draw weight and wood to play with.
I strongly recommend gluing a temporary overlay on the tips that you can file a nock into it wiothout cutting into the side. again this preserves full tip width for any lateral adjustment.
Once roughed out and given a flex on the foor or long string, you'll doubtless need to take a bit off the thickness.
As a rule of thumb, I step down between 1.5 and 2mm for each 6" along the limb. I know this is mixing my units, but mm are V good for thinkness measurements.
It's easy to work it as a square section (obviously with sharp corners removed) until it's starting to really move, then start rounding the corners off the belly to give the slightly rounded shape . The final ELB shape will suddenly appear as the corners are rounded and the last 6" or so are blended into a slim circular section for the horn nocks (or overlays if you don't fancy trying the horn nock thing)
Hope this is of some use.
Del
BTW it won't loose 5# a month if you make it 6' tall and only draw 26"
the poor thing will be wondering when it's going to get a work out