how long will this take?

[SkinnyBas]

to get from 5'10" 155lbs at 16% bf to 180lbs at 10% bf

[elohelbrah]

Well the bulking alone would take around 10 months or so (if you're gaining 0.5 pounds per week [which means minimal fat gain]).. or around half that if you gain 1 pound per week (but with also slightly more fat gain).

Then there's the whole deal with cutting and everything... so it depends really.. but 5-10 months just for the bulking part.

And then of course, once you start cutting you're gonna lose some weight / fat.. so then you'd have to bulk again, and then cut again, etc.

[highintensity1]

All depends on genetics, natural or not, how your body responds, etc....your young. Be patients. If Rome was built in a day, it could fall in one day. Stay true to what you want. Keep moving forward. Avoid injuries.