Do you envision him playing slot & competing with CAB & DD? Those guys go 200lbs & 190lbs respectively. I'd be shocked if Houston weighed 160lbs. I kind of see him as a Z, the same position as Tyler Johnson, who goes 200lbs as well.
All I'm saying is people often underestimate how hard it is to transition to WR at the college level. It doesn't matter how fast you are if a 5th year Sr jams you at the LOS every play & you can't get into your route. It doesn't matter how well you can catch, if the team can't run to your side of the field, because you can't block your man.
I think Houston would be a very, very good player for us, but I think he's a Z, not a slot guy and I think he'd almost certainly need a year to get stronger.