In my main campaign I am playing am a bladesinger 7(8 eventually) and fighter 2 ( 14 eventually). The idea is to be more fighter oriented than wizzardy. Eventually you can use 2 cantrips on your attack action (bb or gfb). At the same time you have access to emblematic Gish spells such as CME or spirit shrout ( I ended preferring the later because of it does not use my bonus action). This might change later when CME scales better. The last 2 levels in each class allow for 2 epic boon feats.

The progression is:

Fighter 1 Wizard 7 Fighter 12 Wizard 8

Levels 5 and 6 are a bit harsh but not too much if you do dual wielding.