If you can wait I can provide you a proper dedicated server with DDoS Protection and support by me whenever you are facing problems. I can give you a monthly cost if you want but the percentage % of your server to get down by DDoS attack will be slight even impossible. I'm waiting a price from my contact. Are you interested?
PS: You will only have access to your dedicated with SSH if you wanna make changes to the protection you will not be able to do it you need to tell me your problem and I will fix it for you. Support is included in the monthly price.