Hmm, if your longest ride has been 2 hours I’d probably go for one of the minus versions- at this stage increasing your mileage by >50% would be challenging even without those kinds of efforts.
From memory LV base does include some higher-intensity stuff, and doing 90min-2hr sessions from SSB will definitely aid you in terms of muscular endurance, so I’d say you’re looking pretty good for -1 or -2. Or you could certainly work towards the full version depending on how big of a goal it is to you. Good luck in any case though, they’re all a pretty big achievement!