I don't think you'll have any problems lastlid. Yours should be a straightforward case.
Well...............................just as long as you remain in IOM until ILR is granted by IOM immigration.
I have a distant recollection of somebody either leaving IOM to live in England or leaving England to live in the IOM. Anyway there was a major issue with compliance to duration of residence in UK or duration of absence from UK can't remember which.
I don't remember the outcome either but it might be something to research if you had any loose plans to relocate before ILR.