The longest run of outs I could get for it over 40000 random samples was 21. Mostly the run of outs was around 15-17. As you say the run of outs can get scary and the stakes can skyrocket pretty quickly. With a 40% Sr and $3 I would say just go level stakes, perhaps 2 percent of bank and go from there as your main betting. Perhaps on the side you could also run a progressice staking plan for a bit of excitement.