Elevated wooden floor and dry lining?

[ashy22]

Hi,
I am a newbie and this is my first question on the site.

I am in the process of converting my old integral garage into a living room.
I am about to lay the wooden floor (just t&g pine lengths) on 6" x 2" joists with ventilation underneath.

The question is, do I dry line the wall first and then lay the flooring up to the plasterboard or put the timber floor in first laying back to the blockwork and then plasterboard down to the top of the wood surface?

I am sure I read it somewhere that the platerboard has to finish above the wood floor level then you put skirting boards round to finish it off.

Not sure which to do first. Any help would be most appreciated.
Thanks

 

[DAZB]

I would lay the whole floor first then the walls on top .

 

[ashy22]

Thanks. It seems the most logical way to do it. Just wasn't sure.