Yes mask and gloves are good to use when cutting carbon fiber
The Tamiya wheel spacer (blue #53646 and red #53646) are great, depend on the depth of the rims hex you can easily add 0.5mm, 1mm, 1,5mm, 2mm offset or more. Tamiya rims usual have deeper hex (you can add more spacers) then for example Schumacher Rev-Lite rims but you can still add some.