The thing with adding new kanji is, reviews grow exponentially and generally stabilize around a number. Say, for 50 kanji a day and 100 during the weekend, you'll review ~300 per day, while for 100 kanji every day reviews will jump to 550+ (numbers are approximate but mostly accurate, I did it using this pace for the last 1200-1400 kanji). The more you've done before you get in the "sprint", the better you'll be at applying the method as well, so the review number will be lower.
You may feel it easy to take 80 a day with only 200 kanji behind you, reviewing maybe 100 of them a day, but when you do this for a week, your review count will plateau at a much higher number (say, 500), making it much harder. I'd recommend you to have a high base number you do every day (say 50), and then another higher number (say 100) you do every other day, when you feel you could handle increasing the amount you're reviewing per day.
In general, frustration increases a LOT when you up the number of new kanji per day, because instead of having 10% of cards be difficult, suddenly you dread every review. It's not just cards per day: instead of doing, say 200 per day, with 15% failed and thus repeated twice, and half of those repeated thrice, you easily end up in a situation with 600 per day, of which 60% you do at least twice, and most are done 3+ times until you get them correct. Reviews with so much frustration are not fun, and can easily burn you out if you're not ready. As EratiK said, consistency is far more important.