No idea which way I will be going about things with my line-up right now. I'm very competitive, but also have to think about whats best for my teams future. At this stage, I can not beat your team, or Aussie at their best. So even though you may think my win was impressive, it's not impressive enough when you break it down.
Personally, I also have to think about minutes and all that. However, I'm not in the same position as you are so I'd think a little differently when it comes to my team compared to yours.
When it comes to your team, I believe in 2 options.
A. Just go for league and keep focused on training; Knowing that you will have a very good team next season, and I'm guessing cash to splash, cup plus league is a reality next season.
B. With the lead you have in the league, a mini sacrifice in league wont be so harmful. The cup can bring in extra cash, making you an even bigger force financially next season. However, if you don't beat BLS, with your current league success, it wont be so bad. If you do win, more money and a chance to win the title is tempting.
Personally, with your team where its at, I'd try and beat BLS then see what comes next. I'd not worry if it doesn't work out cause it would just turn my focus on what I'd need to do in league. This would be scarier for the others if you've like the taste of potential success this season, and therefor decide to go for it.
Either way, it's a chance to play BBB next season and gain even more experience.