IMO, that woofer is too big for a two-way, as it will beam horribly by the time the tweeter takes over. back in the 1960s, many 'speakers were like that, and they weren't very good. The anechoic on-axis response may be OK, perhaps, but the off-axis response will have a considerable discontinuity due to the woofer beaming. In a very dead room and/or with the 'speakers far from a wall, and listening in the near field, it might be OK, but in the diffuse field, with a normally bright room, the sound will be coloured. If you want to use that woofer, and there's nothing especially wrong with it I can see, then I think you should fill in the midrange with a 10-13cm 4-5" mid unit.
S.