Now how do I put this?

It's been a while since I've been on this. And yes, I'm still wishing to build such a robot. And all my ideas have been evolving ever since I've drawn out the first idea. I've even sent a couple of questions to Ask-Aaron. Yes, I'm that "Sheffield."

Not only that, but emisnug even replied to it.

To answer all his bulletpoints on there, which will be linked here, I'm 23, I'm no longer in any education which means access to any CAD software is extremely limited, I've attempted to cost it all out, but with more and more ideas flowing into my head, that's difficult to accurately cost it all out, I have to factor in my autism stuff, so my socialising is extremely hampered, and not only that, I'm having an extremely tough time convincing my mother to let me build one, as she is practically my carer. She says I have "no space to work in (We have an entire back garden to work in and a couple of sheds), no experience (how am I supposed to get experience if I don't try?) no money (eBay's a thing and so is researching), and no equipment (not like I'm going to be doing any welding, and there's a B&Q just a 20min drive away.)." How does one convince a parental figure into letting me do so? Build a small prototype out of wood/cardboard? Draw it all out and tell her where I can get all the stuff from? I'm rather stuck for ideas, and could really do with some help.

So with that in mind, I'm just going to throw all my ideas out on here. And maybe even try to make a (very) rough digital drawing of what I have in mind, but at some point, I will be attempting to draw it out on paper and make it as detailed as possible.

To start off with, chassis wise, I'm hoping to get 30milx30mil box steel tubing. How they're going to be connected is most likely going to be gusset plating and bolts, as I have no experience in welding.
The drive system I would like would be four wheeled, chain driven in a tank-style configuration, being run off of either an electric scooter motor or a wheelchair motor, depending on what the budget I'd have once I finally convince my elder. The wheels are a bit of a unknown at the moment, so I will update on that as soon as possible.
Batteries I would hope for LiPo or anything of the sort, as long as it can get the motors to move.
The ESC and RC I'm willing to splash out on a little bit because if I can't control it, then it's not a robot, it's a hunk of metal.
Shape-wise, I would love to go for a low box, but going from the front to near the middle, I'd love to go for a kind of a pyramid style wedge, and on top of such a shape, the weapon.
Armor I can try to contact John Findlay for some hardox, seeming as that can withstand punishment. Some panels I can skimp on and go for some polycarbonate, such as the bottom of the robot or the back half of it.
As for the weapon itself, it's still kind of in the dark area. I was thinking either a sledgehammer or a pickaxe, but I have no idea how to do pneumatic systems, so it'd have to be electrical. I have ideas for how it'd swing but I'm not sure if it'd be effective enough.

So... yeah... those are just ideas at the moment, so if anything I may end up switching things out for different ideas. Fingers crossed I can try to get things mocked up at least.

Any input would be great, as I've been wanting to build a robot for the past... oh god, 13 years now... and I've never really had the chance to do so.

Cheers,

DJ