Spending all the IPC on naval units leave me with some doubts. It make me not feeling safe for the ebb and flow battles on the Eastern front
It means that Eastern front will get no significative reinforcement for two turns.
I know that initially German have not to advance there but also defending and trading territories requires infantry, and infantry is slow to arrive where it is needed.
When I spend on naval units in G1 I usually buy an AC in sz5 and 8 infantry.
The problem is that such a fleet may be a threat only up round 3, after allied have the air-naval power necessary to sink it, if they need to do.
Buying 1 AC and 3 TRN, the combination that I like more among the proposed possibilities, is interesting however, because sz5 navy may at least play the “fleet in being” role. UK may not leave Englad without an adequate defense and USA, probaby, would shuttle troops there.