Hey All,
We figured going all the way around the island was a bit much for the short time we have.
So we booked for Scuba Sereya and then headed to Ubud afterward. Looking at the maps, it looks like I can avoid most of the altitude. We would like to dive the morning before checkout and then work our way to Ubud in the afternoon. Transfers are not a problem but having made the trip before, do you guys see any issue with diving that am and then heading to Ubud? Thoughts?
Our plan is to dive a bunch days there and check out areas near Tulamben, then work our way back south to Ubud for 2 nights where we plan to hike in the rice fields hikes, get pawed by monkeys, do the north Ubud biking, and local home cooking class and maybe a spa to top it off. The last day after leaving Ubud, we will likely head for Ulu Watu to check it out and any other interests along the way. And then its back to reality for the 8pm flight out. 
Additional feedback so far:
I have to say the communication with Sereya has been fantastic.
In-between, other resorts in Tulamben were communicative but did take quite a long time to reply - I guess we are learning about the Bali way of time 
On the opposite end of the spectrum, Paradise never did respond even after numerous attempts.
We are greatly enthsiastic for our trip.
Thanks for the help and suggestions you guys!