Well look at the top networth country right now. 2.4m NW.

Do you have at least half of that, 1.2m NW? If you don't, you risk being grabbed by that 2.4m NW country.

I'll say right now, because the rank 2 country is 2.1m NW, anything below 1.05m NW (half of that) is under danger of being bottomfed from the top countries.

If you are trying to build 300 CSes then start growing in country size, like in Alliance, that's not going to work, because by the time you finish building the CSes, you would be in bottomfeeding range of the top commies (remember humanitarians is 1/4 to 4x on Primary, NOT 1/12 - 12x).

Instead, you need to start grabbing/growing after your initial 160 CS or 200 CS, and build 20 CSes daily (so your daily 54 turns, about 20 will be building CSes, the other 34 would be spying/grabbing/building/teching) from that point until you reach BPT goal. You need to constantly reevaluate your risks of being bottomfed by the top countries, and grow along.

If you are above 1.2m NW at this point and you are getting attacked, it is most likely a malicious topfeed instead. Last I looked, only 1 or 2 countries above 1.2m NW got attacked, and those hits are retals.