I'll throw in argument for the opposite side as I went through this and decided on ditching both stop the ped and ultimate backup for arrest manager + stock lsdpfr backup menu
for me, arresting peds felt very glitchy with stop the ped and when I called for transports they would only pick up one person at a time where as I think the transports from arrest manager are a bit more flexible (but I may be remembering wrong), all of the extra menus in stop the ped kinda felt like a lot of extra 'noise' or friction in the way of playing too, though I can clearly see some of the benefits it brings, I decided I preferred just using arrest manager