1.You gonna end up with a stronger bench(us in most well written programs)
1.You won't know where to go from there.531,westside,phat,dup ect are systems you can tweak according to your needs and run for years,smolov is not.Imo you are better off learning how to train while you get stronger
2.Due to the high demands of smolov,other lifts will fall behind.Wouldn't strengthening your squat,deadlift,preacher curl or whatever else you want too be nicer?
3.Smolov(especially the full version) is gonna leave you with stiff shoulders,if not injured,as I assume your upper back is not that strong at fourte...oh sorry.I mistakened you for your brother
Anyway,you pay the gym membership,you put the time to go lift so the decision is up to you