It'll still be understandable and if you're talking to others who are beginners in Japanese, they'd probably understand better (since they themselves probably don't know all of the kanji anyway). No one will be offended or confused if you aren't using kanji. Good luck learning Japanese!

thank you so much, smile-san :)

Of course, it's OK :) We will be able to understand your sentence even all written in hiragana. Give it a try !