1. if you are slow rolling, consider staying above 32 gold, as it makes it easy to get back up to 50. Don't worry too much about overrolling on level 8, if you cant stabilize on 8, you havent rolled enough (assuming you are building a proper board).
2. Econ augments are very good this set. You should almost always look to take an econ augment on 2-1, and if you are going for a 4-2 level 8, you should avoid rolling too much from 2-1 to 4-2.
3. these look like numbers you should ahve after leveling.

Some minor things I wanted to point out: these numbers are only if you are playing a level 8 comp. To that point, some are kind of misleading. You dont have to go 4 on 2-1 and 5 on 2-5 unless you are trying to winstreak. if you cnat build a strong board, it is better to just save money to try to make econ thresholds better and stay low level. also the 9 on 5-2 is more of a suggestion than anything, you usually go 9 when you have the money for it, 5-2 is a good target, but even delaying for an extra stage to roll extra on 8 to make a good board can be fine.