Here's some random takes which hopefully make sense and add some value to the discussion!
For me, the fair odds for this bet are at least 22.5, perhaps slightly higher. I've done the maths based on the exchange back price of 18.5 for 1-0 being fair (with 19.5 to lay it could end up at 19) and an 82% chance of the bookings line being covered (using a tried and trusted Kev P formula and taking the buy price of 50 as a guide for the bookings; the sell price of 46 is probably closer to the true value).
To be fair to SBK, they're best price about all of the correct scores for 2 goals or less. Their correct score odds dutch to 2.79 for the unders versus their actual price of 2.86 and an exchange price of 2.98.
If you were going to follow @Torque's idea of the most likely score, this would be a 2-1 game rather than a 1-0 game. 2-1 Spurs at 11 is their most likely win scoreline with 1-1 draw fav overall at 9.2.
To support that notion (the shorter prices being closest to fair), if you add 25% to the SBK score odds and compare it to what you can get on the exchange, 1-1 comes out top at 1.2 x the exchange price while 2-1 is 1.18. 1-0 is just under 1.17. (As that ignores the cards bet it doesn't mean you're getting value but it at least means you're closer to fair odds.)
My conclusion remains that this approach is getting you close to fair odds rather than clear value and that the long term expectation is around break even but we're going to need an awful lot of bets to prove me right or wrong! I agree with Torque that you'd probably improve your chances by backing the score that's favourite (either the shortest win score or maybe even the 1-1 where relevant).
Whether there's a better "blind" angle to be had I don't know. My preferred approach is to build a BB around a leg that you believe to be a value bet in its own right which in my case means goalscorers where I flatter myself I have at least a marginal edge! Unfortunately SBK look to be a bit cautious when it comes to pricing that market.