If you're doing an HSM operation, you should probably use HSM feeds, and just make sure your ramping settings aren't too aggressive. GWizard is a great calculator for this – you can set some default settings and get modified feeds and speeds for various different cut depths and engagement of the cutter, and you can get HSM feeds by checking a box. It also is able to give you feeds for ramping, plunging, and helical paths, which makes it very easy to get the best feeds for a certain bit for a variety of operations.
Also, take the time to calculate feeds and speeds. It might seem annoying, but it's a whole lot less annoying than restarting parts because you broke a bit. It will make machining less stressful and make nicer end results. Especially with long operations, the time you will spend getting feeds and speeds will be relatively minor in comparison to the actual machining time, and you won't have to be constantly swapping out bits, as they will wear out and break much less often.