First time build - Steel Frame CNC Router

[examorph]

Steel box section and plate had arrived earlier on in the week:
Attachment 17758Attachment 17757
Ended up buying a tungsten carbide blade for £80 to cut this as 5 of the 6 local suppliers I visited advised that the machine had a "non-standard" 25.4mm shaft.
Seemed to work fine the first day but when trying to cut the box section the next day, it seemed to require a lot more time/force, I think I may be cutting too fast and wearing out the blade.
Attachment 17759
Ended up with a bit extra 100x50 section and too little 50x50 section, I underestimated how much box section it would require and assumed I had more than enough at 7.5m of each. Guess its true what they say about assuming!! Requested price for 1m more of each and changed the design slightly to use the larger box section for the horizontal bracing:
Attachment 17760
Other than the two sections I am ordering, all box section has been cut, but unsure if some of it is still good as I think maybe 3 sections (bed supports and gantry box section) are 3-5mm shorter than what I needed, will this be OK filling up with weld?
Attachment 17761
Was hoping to have it all welded up this week but ended up being a slow start with the few hick ups pushing things back a week
All in all, it was a good experience and even though I had some problems, I enjoyed it and learnt a lot of new things

Some questions I hope you guys could help me with please:

• From what I understand 5754 aluminium is the grade but if specified as tooling plate, would this be OK for use on the Z-Axis without having to face it off?
• As this machine will be moved 3 times (welded in workshop, epoxy leveled in a smaller room for heating and installed in a shed) is it worth welding some adjustable feet to the legs?