Cashing out Annual Leave

I was just hoping to get some opinions;

I have accrued about 7.5 weeks annual leave and I was thinking about cashing out 3.5 weeks of leave.

The main reason for considering this is because I'm currently acting in a higher duties role and my leave will be paid out at my current (increased) rate.

If I do cash out my leave, I'm thinking of just putting the extra income into my super.

Thank you for your thoughts

Other factors;

I cannot travel for approx. the next 1.5 years for personal reasons.

When I hit 8 weeks AL I'm going to have to use some, unless I lower my balance prior.

I get and RDO every fortnight and half a day study leave per week (so I'm not really keen on extra quality time at home haha).