Hi all - just saying hello as I (slightly to my surprise) got the VBAC I wanted 3 days ago, and had many of the same questions and worries as you before it! (DS was EMCS due to bad position which caused me not to dilate properly). So, it IS possible, though also flipping hard work
I was worried about CFM too, in fact I was really dreading it as water and movement helped me lots with DS - but managed to avoid it until the very end due to nobody thinking I was that far along until it was too late! In fact most of the dilating happened while I was being shunted round the hospital, from the waiting room(!) to antenatal ward (as they thought I had ages to go...) and finally to delivery when they realised it was all happening a lot quicker than that! So was upright, mobile and doing lots of walking, with no monitoring and just my TENS machine (and G&A right at the end when we reached delivery), which I suppose is just what the doctor ordered.
I did have CFM for the very last bit, once we got to delivery, but mostly only for the final stages of transition and for the pushing bit, and frankly by then I didn't even notice it as 1) I was still able to move around a reasonable amount (different positions on beanbags on floor or on the bed), 2) I was too knackered by then to want to be much more active, and 3) it was all so intense I could have been monitored by aliens for all I would have cared as long as it got the baby out! In fact for me I found the best position for pushing was in any case half-lying on the bed, strangely for me that worked better than all the "using gravity" positions that I tried, so don't rule anything out.
I think the main advantages of VBAC for me were that lovely DD didn't have any after-effects from the birth, we were out of hospital the next day, and although it definitely DOES still take some time to recover from, I think I am definitely getting over it quicker than the CS and can already lift up DS if I really need to, for instance.