Decathlon now do a range of running watches which data can be uploaded.
To be honest, messing with gadgets/phones etc. is probably one of the reasons you aren't cycling or running. Just get out there and do it. Stop faffing about. Your 705 will do the job fine without any expense.
Personally, I think you are putting a 'blocker' there by having the devices.
Other daft question - can you not start cycling to work, I thought you once did ? I've been desparate to get back cycling to work, nothing like being stuck in a car in a jam. Only managed 4 days of driving.