hii I want to store my bitcoins for long,  will only be adding bitcoins to my wallet and not spending any,  I just have one computer and don't want to buy (couldn't afford to right now) trezor for cold storage and no paper wallet.

My question is can i install electrum on my  laptop, after writing down my seed somewhere safe then uninstalling it right away after exporting my master public key. After that I will install electrum again as a watch only wallet.
will that be safe?