So I have been doing weight training for a couple of months now. Using the idea of progressive overloading I have been increasing the weight by about 5kg every week or 2 or 3. Since I'm working out at home without a spotter I make sure I'm safely below my max.
My problem is that, with my deadlift, I can now do all the weight I can fit on the bar. My biggest plates are 7.5kg of which I only have 2 and 2x5kg and the rest are 2.5kg. So they are not very tall and thus take a lot of horizontal space on the bar and I can no longer fit any more weight onto the bar. I imagine that I will be having the same problem with my bench press soon as I am only 5kg the bar's maximum.
I am currently looking to buy/make some larger weights but won't be able to do this for a while. In the meantime I would still like to be increasing my strength.
So my question is:
How can I continue to increase my strength without increasing the weight on the bar? Should I do more reps per set? More sets of the same reps? Repeat the exercise daily or twice a day?
Will these alternatives cause me to increase muscle size? I've been doing 5 reps as I've read that this or even less is optimal for training strength without increasing muscle size.
My goal is to increase strength without gaining too much muscle size.