Will you be wanting to 'sweep tune' the IF stage ?
This may put constraints on triggering capabilities and may also depend on your signal generator. Will the signal generator free run with the scope triggering or have the scope free run while triggering a sweep
I must confess that having enough bandwidth to see the RF (in an FM tuner) didn't help me as the signal was too small
Occasionally, I see the unpopular / heavy / large tek 7603 going for little money, but you need to pick one with suitable plugins ...
dc