It's really your call Hun. For many of us it's the long days that just don't work, because it really cuts into your down time, and if in a relationship 'couple time'. I found the long days and late nights hard to take, because I'm done by 8 PM latest!!! This means that it's not good for DS because my patience is low, so it's a matter of balancing as a family, if that makes sense

Admittedly I'm just not at my best come BT

It's a challenge for me these days unfortunately

.
My gut tells me that even if things go smoothly now it won't be long before his nights become later and his days even longer, it's just the way things tend to progress from own experience and other BW's. So like Katherine says, if everyone's happy with the 'status quo' then you can carry on for now, otherwise I would just cap the nap 15 mins shorter at first, and play it by ear WRT BT, as you won't really know what's right without trial and error, but I would probably shoot for this in the first instance:
WU 6.30 (ish)
Nap 2 to 3.15
BT 7.45
Hoping he'll settle within the 15 mins giving a 13.5 hour day with a 1.15 nap.
x.