I agree with Neil: make the surface from solid surface and it won't move or get funky should you decide it needs to be in hurricane rains. Contact someone with a CNC as the hole pattern for an MFT is trivial to code and route (my friend did it for 3 work tables in my shop and he's keeping his next solid surface offcuts for my Walko-4).
I live in Arizona, which makes Colorado look tropical. When I got my tables, I slathered CPES (clear penetrating epoxy sealer) on it. They are now considered water-proof, but since I don't swim well, I'll leave the Walko out of the pool. I know 'rnt80' lives over in Mesa (~15 miles from me) and his tables started to check badly; he got replacements. Ask any flooring place in Arizona: bamboo flooring (which the tables effectively are) and Arizona don't mix.
I wanted the wheel set when I ordered mine, but there are none on our continent (ah, NAINA again). My mechanic is welding two very nice wheels to Simpson Ties L-brackets that will be attached to the side of the Walko legs so I can barely lift the far end to engage the wheels and scoot it around. I don't have the wheels back yet, but will blog about the idea when they arrive.
LASTLY, I got a set of the table struts with the table. Yes, it takes a couple times to get used to attaching them (the instructions actually tell you where the handle should be; life's nicer now that I read it). They were so useful that I bought another set on clearance from Woodcraft for $40. I had a big project that weekend and found that I used every strut to stack most of my parts on the Walko. Since they won't be available anymore, I bought yet another set of table struts the next time Woodcraft put them on clearance. I now have a couple more (4 to a pack) than I need, but they are ridiculously useful when processing rough lumber. Or to hang tee-shirts out in the rain for free laundry (sorry Frank, just having fun; first thing I did was do your chamfer idea so I'm thankful for your posting

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