The iPad I had before this one was first gen 12.9. Bought it in 2016 when they released 256gb size. My first iPad was the very first ipad in 2010. Best thing ever. Then I got the iPad 3rd or 4th gen in 2012 before I got the pro. I made my iPad Pro last longer than the first two iPads. I still have my 3rd gen iPod still works but battery sucks on my bedside for music, my iPhone 6 plus for music to listen to on my art desk. I use my iPhone XS Max for phones etc. I am sure I can make this iPad last at least 6 plus years. . My iMac I bought in 2014 is a 2013 refurbish model, and still working great . Yeah I think I can make my items last a good 6 plus yearsYep, you will be fine, except that you will probably want a new iPad in about 3 years from now anyway. 😉
edit: too many errors on here. I need more coffee lol