old razor doesnt really need that third piston the black battery or the buzzard wheels. you could change the wheels to shinies and reduce the amount of pistons for more weaponry. fast pokers like that tend to rely on drive speed more than sheer piston speed anyway
spike entanglement looks a bit like a bot i built some time back:
(http://i.imgur.com/eldlA.jpg)
(http://i.imgur.com/jM0GQ.jpg)
but of course my bot i built off a single snapperII with the aid of snapper loading: http://beetlebros.gametechmods.com/ra2techs.htm. (http://beetlebros.gametechmods.com/ra2techs.htm.) from my experiance chained hs tend not to have very quick acceleration but weapon speeds can be ridiculous.
and synwisps side armor is pretty useless to be honest. i would probably trade them for a snapper2 with a ~60/80 cm extender + a small wedge to help get under opponents. razor tips also are the best for bots like that (aka popups)
Is motor stacking worth my time anyways?
if you are talking about putting your weapons motors/drive on snappers, yes if you use as few bursts as possible. you see, putting motors on snappers increases their speed, and they wont be in your chassis using up chassis KG.
if you mean chaining motors together with a 20cm extender, then mostly not except on a few VS that have the goal of punting their opponent around and being glass cannons (nightmare-esque bots)