I don't know if you saw the recent case in the papers in the UK of a woman from Liverpool who had the same / similar treatment (I think it cost £14,000). She was diagnosed at 40 and five years later was said to be heading for a wheelchair.
The UK MS Society must have been inundated with questions and published the usual reponse - http://www.mssociety.org.uk/go.rm?id=14188
Of course the Society is funding some projects in this area, but as usual it's ten years away before anything likely to come of it (if at all). Not sure what you position is but given the pretty poor options on offer why not go for it? What is the risk, apart from losing some money? You've only got to look at poor Richard Pryor to see what might happen.
Hope all goes well if you decide to go ahead. It's just a pity that MS sufferers have to pay and hunt down any possible options that are going because mainstream medicine (especially neurology) has made such limited advances.