Agree with the 2x Barlow, and while the Plossl eyepieces that came with your scope work, I would recommend something a little better for the planets, such as one of these. 6 mm gets you a good look at the planets and their moons, 3 mm (using a 2x Barlow) gets you nice and close when conditions allow.
https://www.bintel.com.au/product/or...v=322b26af01d5
https://www.opticscentral.com.au/sax...eyepieces.html
This is a good website to estimate what you will be able to see with your scope/eyepiece combination.
http://www.12dstring.me.uk/fovcalc.php
Andrew