New Flo 60/90 combo or used Zipp 404/808 with Powertap hub?

I am prepared to buy aero wheels for my 2015 P2. I was going to purchase the Flo 60/90 combo for approx. $900 pre tax.

However, I also have the opportunity to buy a used Zipp 404/808 combo with Powertap hub for approx. $1150. I think they are from 2010 or 2012 and have approx. They are the previous generation with aluminum braking. They are geared for a 10 speed. So I would need to spend about $100 bucks on a freehub body to replace current ten speed version allowing the wheel to be Shimano 11 speed compatible. No re-dishing of the wheel is required. The current rider has put about 1500 miles on them, but a lot of those were on a trainer. The guy he bought them from only raced with them and estimated less than 500 miles.

Any issues with converting the 10 speed Powertap hub with the freehub? Would that dissuade anyone?

The owner also had a disc cover cut specifically for the Zipp 808 wheel as well.

I also have a Garmin 910xt a believe the powertap would send the data to my watch.

Any advice or recommendations out there on these wheels or what would be the best bet?

Any/all thoughts or replies would be greatly appreciated to help out his newbie trying to build up his P2!

Thanks!

The Flo 60/90 will be faster than the pre-Firecrest Zipp wheels.

New Flo 60/90 combo or used Zipp 404/808 with Powertap hub?

I am prepared to buy aero wheels for my 2015 P2. I was going to purchase the Flo 60/90 combo for approx. $900 pre tax.

However, I also have the opportunity to buy a used Zipp 404/808 combo with Powertap hub for approx. $1150. I think they are from 2010 or 2012 and have approx. They are the previous generation with aluminum braking. They are geared for a 10 speed. So I would need to spend about $100 bucks on a freehub body to replace current ten speed version allowing the wheel to be Shimano 11 speed compatible. No re-dishing of the wheel is required. The current rider has put about 1500 miles on them, but a lot of those were on a trainer. The guy he bought them from only raced with them and estimated less than 500 miles.

Any issues with converting the 10 speed Powertap hub with the freehub? Would that dissuade anyone?

The owner also had a disc cover cut specifically for the Zipp 808 wheel as well.

I also have a Garmin 910xt a believe the powertap would send the data to my watch.

Any advice or recommendations out there on these wheels or what would be the best bet?

Any/all thoughts or replies would be greatly appreciated to help out his newbie trying to build up his P2!

Thanks!