Personally I've learn't a lot from building TOM. The axe won't be the greatest but few are! Scooter motors are as cheap as chips which is handy
Really looking for something with at least a 775 sized motor and an affordable gearbox. Yes Banebots do P60 gearboxes and 775's but they are pricey plus then there is import tax. I don't have the equipment to build custom gearboxes for a speed 900 (or similar) so you make your choices. All part of the fun of robot building