Aslong as we can keep our hand out of the cookie yar and not throw away money on useless stuff (cruises and such!) I think we should stick to piling gold, we have no need for robotics or space flight atm and we can't do them at full speed anyway, so whats the rush?
Once we take the 1 tile rubber isle we should be able to hold it for a long time, unlike ACI, yes they can take the isle, but not with their current forces!
The way I see it we need a few jets, sams, bombers, subs and destroyers atm. I suggest we build them to the rubber (from the rubber isle) is hooked again. Tows are okay, but I would rather beef up our defence in other areas for a few turns and then produce ma's later instead.