Do not bid like this at home

Needing to generate a IMP swing, I looked to bid and make game here

My (human) correspondent I showed the hand to, rightly criticized my spade finesse on round three of the suit. "I can understand playing on spades before leading the 3rd round of clubs—if West had the last high club, you want to limit the number of tricks by which you go down. But taking the spade finesse on the 3rd round of the suit was an unnecessary risk—you still needed a club trick to make your contract, and if the spade finesse lost, you’d be down even if the last club honor was with East. And if the spade finesse was winning, and you don’t take it, you’ve managed to set up a trick for East, but at worst that would be the defense’s 4th trick—you still make your contract if East has the last high club"