It's difficult to compare a Futura with a Grand Raid. The Futura is Strongan Duotex (basically Zodiac's own PVC material) vs a MilPro Grand Raid with hypalon material.
To put this in perspective - Zodiac will sell you this new for over £7k GBP or 8,300 Krona.
Yes the Grand Raid doesn't have speed tubes, but it's designed with heavy duty in mind, inter-communicating valves, bow D rings, HD aluminium floor, long-shaft engine, probably 40hp, fuel bladders, and used by military, rescue and local government agencies alike.
Given you'll never achieve the right temperature or reduced humidity at this time of year then the only way to repair is in a well ventilated and heated garage/workshop with a 2-part glue.
Plenty examples on a web search to gauge prices.