I must admit that by reading that bio he sounds like a promissing prospect.
I frankly thought (hoped) the Vikings would sign Tahi as an undrafted free agent right after the draft.
He's a big boy (250+ lbs), and is an excellent receiver as all BYU players tend to be.
Allegedly, he's seldom played the role as a blocker, being more of a "runner/receiver".
Also, he's 25 (having already spent part of his life performing his Mormon "mission"), but that shouldn't really be a problem.
Here's a good link to Tahi and his skills.
I hoped the Vikings would take him as a guy that could get that 1 yard on 3rd and 1.
Here's hoping we see something good out of the kid.
Note: The link above and some others list his weight as 230 lbs.
I have seen others that put his weight at 253-254 lbs.
One site compared him to Jerome Bettis.
Not a bad role model, IMO.