If there are vacant wholetime posts then I would support the notion of you being considered for them, though the fact that WT are being recruited to RT does nothing to support your claim, merely that there are RT vacancies that cannot be otherwise filled, or that WT fill these posts more efficiently as they require no training and probation and can offer around 50% daytime cover?
So reading the reply there is a new station (in an area where there wasn't one previously?) whdere 1 pump will be moved to and another new station at the south of the town? Do you know whether the new station will be 1 or 2 pump? The new appliance with an 8 person crew cab may allow 1 pump to turn out with the full first attendance that 2 did previoulsy. I note that the existing station has an aerial, foam and ET too (no doubt alternately staffed) and a watch strength of 19, so the transfer of 1 pump to the new N stn will likley drop the watch strength to 12 - still enough to crew 2 appliances with WT personnel (2nd alternately staffed with specials - as is the case in manmy FRS).
With a new station to the north and another to the south of the centre replacing the former central one how do you come to 'losing 2 pumps in the area'? Seems that there will be the same coverage only moved to the edges and thus covering the town better? Also, as you say, the new location is where the risks appear to be.
Would still be a help if you could tell us what the locations are as we are not locals and will have to examine the maps to get a true picture. From what I can see the town is only 5kms from N to S and has a dual carriageway running directly through it (again N to S), so the travel times may be short from end to end and the 2 stations well able to support each other, when required? There are also another 5 RT staffed pumps within the 10km circle around Chesterfield - quite well served in comparison with many other areas of the country.
I would have thought, sorry to be so harsh, that if I were the management I would be seeking to have the new stations WT crewed with the specials alternate with 2nd pumps and that the existing RT would then not be required. The new N stn (or is this the Staveley one - which is being greatly upgraded from what I can see) has quick transport corridors to the south of the town and also to Dronfield and Staveley.