To be honest at this age I would probably go to one nap, unless you feel like he is nowhere near ready. Most seem to be on one nap by about 15-16 months, so it would seem sensible to get a one nap routine going, rather than improve a two nap routine and then need to change it up again, yk?
OK so there are a few things. When he is awake standing in his crib, don't go in to him unless he is properly crying. I don't know if I'm reading correctly but it sounds like he's not upset when you first go in.
Second, be prepared for lots of crying during sleep training, specially when weaning the paci. Toddlers are not known for their flexibility
Do try not to bring him into bed with you. It would be one thing if he was going back to sleep but you say it just wakes him up ready to play. Decide on what is a reasonable time for morning, and keep him in his crib until that time, in the dark. Once it hits 6am (or whenever), turn on the lights, throw open the curtains and say 'Good morning! It's morning time, now we can get out of bed!" (contrast with a tired/low/quiet voice saying "shhhhh, still sleepy time" when it is the middle of the night).
The trick with sleep training is to settle him in his crib. He wants to be in your arms, so if you settle him in your arms with a cuddle of course he is going to be mad when you put him back in his crib and then you are back to square one. He needs to get used to calming down and settling to sleep in the crib.
When you transition to a 1 nap routine you can expect him to be pretty overtired at first but his nap should soon start to lengthen out. I would give it a go and see what happens. Something like.
7am awake
12pm nap (if he wakes in less than an hour, try and settle him back to sleep, he should be pretty tired after a long morning A time).
6.30-7pm (depending on length of nap) asleep for the night.
Obviously if he wakes at 5am and doesn't go back to sleep, you'll need to bring his lunchtime nap a little earlier. I would try to avoid him sleeping on the nursery run - see what you can do to change things up so that he doesn't nod off. Maybe not having the paci will be all he needs to stay awake.
Does that help?