thats my situation bruv, id say like 8 or 9, depends how confident you are generally with electronics i guess, like when u get a TV do you suss it out quickly? thats what i think anyway, i will say if you have some computer music knowlege its a doddle, probably quicker than learning a lot of music prod software, i find software can hinder some because if you dont know what things mean its a lot of information all at once, mpc breaks you in haha.
It depends on what you have worked with in the past. If you have used other amplers and sequensers. If you have it's a breeze if not then your in for it.