YES, YOU NEED FREEZER SPACE! The rule of thumb is one cubic foot of freezer space for every 25-30lbs of packaged meat.
YOU REALLY SHOULD INVEST IN A MEAT THERMOMETER! The only way to tell if beef is done is by the internal temperature, not the color or the cook time! The temperature of cooked beef will continue to rise as it rests. Here's a trick, remove beef from heat when the thermometer reads about 5-10°F lower than the desired doneness.
HAVE YOU TRIED A SMOKER? We absolutely swear by our smoker! We have placed some lesser value roasts in the smoker and had them turn out melt-in-your-mouth delicious!
WHAT ABOUT A SLOW COOKER? The average crock-pot can hold a 3-4lb roast! Just layer in your veggies, etc and let it cook all day! We hear nothing but good things about the "instant pot" - our daughter has one, we will let you know how that's going!