Well, this isn't Africa, though I've been in similar places and done all that.
While a 732 isn't exactly overpowered, as you say, that shouldn't preclude takeoff performance data from being available. Flew the 727 and higher flap settings (30*) will result in a higher runway performance than climb performance, but that's why we carry the performance manual and a brain. Trying to figure out why Boeing isn't even bothering to provide the information for the 737. On face value the 722 and 732 should have roughly similar capabilities as a % of MTOW.
Point is, if I want to sacrifice a bit of climb performance for better runway performance the FPPM should provide me with the information I need to make the appropriate tables, yet I don't see that anywhere, and I don't recall seeing any restriction against using higher flap settings over a certain weight in the FCTM or the AOM.