Right now your best advice is to ignore the FW-190 and just go down the BF 109 tree. Everything the FW can do, the BF can do better: Climbing, burst mass (3x30mm), speed, maneuverability. Even the multiplier is higher on the later BFs.
Right now you should only buy any FW if you have some serious fetish about that aircraft or are masochistic.
I don´t know whether it´s possible to fully skip the FWs though. I don´t know how many Tier 3/4 aircraft are required to continue researching the 109 G10 and K. Luckily, I already have those.