I have an 8in celestron. The lowest I would go is my televue 8mm. Jupiter and Saturn are in not good positions so alot of atmospheric turbulence. I would recommend you get good eyepieces like explore scientific 82 line and televue delos for that scope. You will hear its f10 and all that dont need to buy the best. But using that logic fs you when you get your nice new next telescope. I was gonna get the same scope you got a great scope but I went and spent the rent on the edge 8 HD and an avx mount. So mine being an f10 I didn't go cheap on eyepieces. I have 3 televue delos an an es 14mm 100 degree plus the 40 plossl it came with. That 40 isn't much use. But If I got cheaper eypieces ik would have had to buy all new eyepieces since I'm mounting an es 80ed f100 on top of it