If yupo was headed for a sub 6.30 then prob wouldnt be posting rowing questions on here... so college level more realistic than cubc
Mens:
This stage in the year, 1:50 split for 2k (7:20 total) is prob the second boat standard. Id say 1:45 (sub7) youd have decent shot at first boat, but the best in there might be in low 6:30's. Depends on technique on the water as well, and how much weight your adding to the boat, what your flexibilities like etc
Womens:
Not entirely sure, seems a bit more hit and miss. Anywhere between 1:55 and 2:30 splits in the top 2 boats...
If you havent rowed before then a good standard of fitness prob equates to about 7:30 on the erg - better technique prob take a few seconds off that without much effort. Really depends on weight too - if your built big you can probably beast a decentish 2k time but youd likely fall apart over 30min, which is what a lot of the training is done over. Theres usually four or more boats in novice term and so long as you can do a 5min 1k youl manage to get in one of them at least...depends what your aiming for really
Hope that helps