Some thoughts after trying a J1.
The main one is that China is very much stronger. I would go back to placing a Kiangsu IC J1, and a 2 TT buy. Malaya is not a good location for an IC because you can’t reliably hold it.
Other thoughts are that hold the Carolines are probably even more important with more NOs in that part of the Pacific.
In general though, I think the move is very strong.