Modded and Tuned Lizard95 Flight

I got the Lizard95 as something to tool around the house and get some practice in without annoying my neighbors. It flew terribly out of the box, sloppy and full of vibrations. It was fast, but didn't have the control I wanted. I replaced the motors with DYS BE1104 7000KV, design and printed some 2mm motor softmounts, replaced the props with Furious 1935x4, removed the antenna guards and replaced the cloverleaf with a dipole. Updated betaflight and BLHeli-S to the latest versions. Battery is a 3S 450mah GensAce, which sags badly under high throttle. I need to find a good high C battery for this.
I've had the roll of death a couple times before the mods, so I hope it's gone now. Here's my settings:
# Betaflight / OMNIBUS 3.1.7 Apr 3 2017 / 22:14:20 (e1c4b5c)
feature -RX_PPM
feature -CURRENT_METER
feature -BLACKBOX
feature -SDCARD
feature RX_SERIAL
feature LED_STRIP
feature AIRMODE
feature FEATURE_ANTI_GRAVITY
beeper -SYSTEM_INIT
beeper -ON_USB
map TAER1234
serial 2 64 115200 57600 0 115200
led 0 0,7::COI:0
led 1 7,7::CTO:0
led 2 8,7::CTO:0
led 3 15,7::COI:0
aux 0 0 1 900 1150
aux 1 13 1 1700 2100
set min_check = 1005
set max_check = 1995
set rssi_channel = 9
set motor_pwm_protocol = DSHOT600
set serialrx_provider = SBUS
set vbat_warning_cell_voltage = 33
set acc_hardware = NONE
set pid_process_denom = 2
set osd_units = METRIC
set osd_vbat_pos = 2049
set osd_rssi_pos = 2074
set osd_ontimer_pos = 374
set osd_flymode_pos = 397
set osd_throttle_pos = 2401
set osd_horizon_pos = 200
set osd_craft_name_pos = 2433
set vcd_video_system = 2
profile 0
set vbat_pid_gain = ON
set anti_gravity_gain = 3.500
set setpoint_relax_ratio = 45
set d_setpoint_weight = 75
set d_lowpass_type = PT1
set p_pitch = 30
set i_pitch = 38
set d_pitch = 20
set p_roll = 30
set i_roll = 38
set d_roll = 20
set p_yaw = 65
rateprofile 0
rateprofile 0
set rc_rate = 134
set rc_rate_yaw = 134
set rc_expo = 20
set rc_yaw_expo = 20
set roll_srate = 76
set pitch_srate = 76
set yaw_srate = 76
set tpa_rate = 20